GB2226145B - Photometer device in a single lens reflex camera - Google Patents

Photometer device in a single lens reflex camera

Info

Publication number
GB2226145B
GB2226145B GB8905785A GB8905785A GB2226145B GB 2226145 B GB2226145 B GB 2226145B GB 8905785 A GB8905785 A GB 8905785A GB 8905785 A GB8905785 A GB 8905785A GB 2226145 B GB2226145 B GB 2226145B
Authority
GB
United Kingdom
Prior art keywords
single lens
lens reflex
reflex camera
photometer device
photometer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB8905785A
Other versions
GB2226145A (en
GB8905785D0 (en
Inventor
Irene Planek
Richard Gebhardt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pentacon GmbH Foto und Feinwerktechnik
Original Assignee
Pentacon Dresden VEB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pentacon Dresden VEB filed Critical Pentacon Dresden VEB
Publication of GB8905785D0 publication Critical patent/GB8905785D0/en
Publication of GB2226145A publication Critical patent/GB2226145A/en
Application granted granted Critical
Publication of GB2226145B publication Critical patent/GB2226145B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/099—Arrangement of photoelectric elements in or on the camera
    • G03B7/0993—Arrangement of photoelectric elements in or on the camera in the camera
    • G03B7/0997—Through the lens [TTL] measuring
    • G03B7/09979—Multi-zone light measuring
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/099—Arrangement of photoelectric elements in or on the camera
    • G03B7/0993—Arrangement of photoelectric elements in or on the camera in the camera
    • G03B7/0997—Through the lens [TTL] measuring
    • G03B7/09971—Through the lens [TTL] measuring in mirror-reflex cameras
    • G03B7/09976—Through the lens [TTL] measuring in mirror-reflex cameras the sensor being mounted in, before, or behind the porro-prism

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Viewfinders (AREA)
GB8905785A 1988-04-12 1989-03-14 Photometer device in a single lens reflex camera Expired - Fee Related GB2226145B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD88314633A DD270603A1 (en) 1988-04-12 1988-04-12 LIGHT MEASURING DEVICE FOR A MIRROR REFLECTING CAMERA

Publications (3)

Publication Number Publication Date
GB8905785D0 GB8905785D0 (en) 1989-04-26
GB2226145A GB2226145A (en) 1990-06-20
GB2226145B true GB2226145B (en) 1992-06-10

Family

ID=5598361

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8905785A Expired - Fee Related GB2226145B (en) 1988-04-12 1989-03-14 Photometer device in a single lens reflex camera

Country Status (3)

Country Link
DD (1) DD270603A1 (en)
DE (1) DE3908228A1 (en)
GB (1) GB2226145B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6215503B1 (en) 1998-05-29 2001-04-10 Microsoft Corporation Image generator and method for resolving non-binary cyclic occlusions with image compositing operations
US6844981B2 (en) * 2002-09-25 2005-01-18 Koninklijke Philips Electronics N.V. Non-symmetrical light stop

Also Published As

Publication number Publication date
GB2226145A (en) 1990-06-20
DD270603A1 (en) 1989-08-02
DE3908228A1 (en) 1989-10-26
GB8905785D0 (en) 1989-04-26

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930314